diff --git a/interfacer/contrib/build_browsh.sh b/interfacer/contrib/build_browsh.sh
index 7fc78892..0757bbb8 100755
--- a/interfacer/contrib/build_browsh.sh
+++ b/interfacer/contrib/build_browsh.sh
@@ -12,7 +12,7 @@
 
 set -e
 
-INTERFACER_ROOT=$(readlink -m "$( cd "$(dirname "$0")" ; pwd -P )"/../)
+INTERFACER_ROOT="$( cd "$( dirname "${BASH_SOURCE[0]}" )" >/dev/null && cd ../ && pwd )"
 cd $INTERFACER_ROOT
 
 # Install `dep` the current defacto dependency manager for Golang
diff --git a/interfacer/contrib/xpi2bin.sh b/interfacer/contrib/xpi2bin.sh
index 9c7d9e37..7a95b2ec 100755
--- a/interfacer/contrib/xpi2bin.sh
+++ b/interfacer/contrib/xpi2bin.sh
@@ -1,7 +1,7 @@
 #!/bin/bash
 set -e
 
-INTERFACER_ROOT=$(readlink -m "$( cd "$(dirname "$0")" ; pwd -P )"/../)
+INTERFACER_ROOT="$( cd "$( dirname "${BASH_SOURCE[0]}" )" >/dev/null && cd ../ && pwd )"
 
 go-bindata -version
 go-bindata \